Concrete-construction form.



Mh/Miene j l L S. VAN GESENq CONCRETE CONSTRUCTION FORM.

APPLICATION FILED Novl 18,1913.

Patented Dec. L 1914.

21 SEEETSWSHEE'X l.

APPJCA'HON FILED NOV. 18,1913

Patented Dec. 1, 1914.

J. S. VAN GIESEN.

CONCRETE CONSTRUCTION FORM. APPLfzM'mN HLED Nov. 1a, 1913.

1 1 1 9,734, Patented Dec. 1, 1914.

3 SHEETS-SHEET 3.

I 521g. @Lesen Suma/tot` UNITED STATES, PATENT OFFICE.

JOSEPH S. VAN GIESEN, 0F LITCHVIL-LE, NORTH DAKOTA.

CONCRETE-CONSTRUCTION FORM.

Specification of Letters Patent.

Patenten Dec. 1, 1914.

Application filed November 18, 1913. Serial No. 801,653.

To all whom it may concern.'

Be it known that I'. Josnrn S. VAN Ginsi-iN,a citizen of the UnitedStates, residing at Litehville, in tlie county of Barnes and State of`North Dakota, have invented certain new and useful Imprm'ements inConcrete-Construction Forms, of which the following is a specification.

My invention relates to construction forms for concrete work, and moreparticularly to a type of forming means for upright convone above theother edgewise, and on both sides of ay space the desired thickness ofa. wall, together with vertical means for supporting the said formingboards, and a portable or adjustable working platform.

`With these and other objects in View, all of which will be' clearlyexplained and claimed, the improvement further resides in the novelarrangement of parts best seen by reference to the drawings forming apart of this application. But before referring specifically to theseveral features as shown in the drawings .in whieh'like referenceCharacters represent like parts in the-several viens. 'l wish itunderstood that I do not intend to limit myself to the specificconstruction shown therein, but on lthe other hand shail e'x'iezft touse any kindfdf material and any 'shape of forms and to make all suchmechanical changes in the construction of the forming means as may berequired to moet all other forms of construction not here illustrated,to which the broad principles of my invention may be applied. y

VIn the drawings, Figurel represents an assembled view of. one form of aconcrete forming means for a straight wall. Fig. 2 is a transversesection of the same type of forming means as shown in Fig. 1 when thewall is partly constructed and showing the method of procedure. Fig. 3is a -view of a form of clamping means or the shaft of a hoistingwindlass used in connection with the construction work. Fig. 4 is asectional plan view on the line A--B of Fig. 2 showing a method ofbolting the studding or upright supports and the means of supporting thesliding retaining keys for the form boards. Fig. 5 is a plan view of anarrangenient of my'principle in connection with the construction of a.hollow circular shaft. Fig. 6 is an elevation of the arrangement shownin Fig. 5, and, Fig. 7 is an arrangement for the spacin0r of forms usedin certain constructions, indicating the forms and D the spacer.

Referring to the parts specifically and by the reference characters, 1-1are the studs or upright supports having slidably mount ed over each twokeys orkey members 2-2 the same being joined at the top in any suitablemanner by the jointing means 3. Ke blocks 4 are mounted uponthe sides'ofthe studding in sufficient number .to guide and support the sliding keysagainst the backky =blocks or supports .being disposed a sullicient'distance back from the wall edge of the studding to allow vfor thethickness of the form-boards '5 as well as ward pressure of the greenconcrete, thesaid the sliding keys, (see Fig. 4), thus presenting aperfectly smooth inner surface for a flush wall. Y n

Secured to the outer edge of the studding (the edge farthest from thewall) in any approved manner is the supporting rack 6. This rack servesthe purpose of taking the downward thrust of the platform support 7which support' is pivotallymounted at 8 to the working platform 9. Theplatform is further provided with beams 10 Which extend rearwardly fromthe pivoting point 8 of the support 7 to another pivoting support l1 onthe sides of the sliding keys 2. Mounted directly over the Workingplatform is the Windlass 12 provided with rotating crank 13, retainingpawls 14, connecting ropes 15 and counter Weights 1G, the windlass beingrotatably mounted upon the upright studding 1 by. means of clamps (seeFig. 3) having a plurality of teeth. 17 registering with similar teeth18 of the rack 6 in such a manner that the said clamp may be readilyshifted to any desired height within hounds of the rack. The said clampis farther provided with a flanged side wall 19 in which is an opening20 the said openingr being for the purpose of receiving a retainingserewwhieh may be driven into the studding for further retaining thesaid clamp. The cylindrical bearing '2i is for the obvious purpose ofrotatably mounting the windlass spindle. Springs may be disposed aboutas shown between the plat forni` supports for thc purpose oi'automatically controlling the supporting members. Rods or bolts 23running from stud to stud through the' plane of the proposed `wall servethe purpose of steadying and securing the studs. These bolts may beprovided with nuts at their extreme ends for the purpose of removing thesaid studs as the work progresses. It will be seeiitliat by this ai'-rangement of forming means any height of wall may be constructed withthe equipment. shown in Fig. l (of course assuming 'the working platformto be in both sections of the rig instead of iii one as shown). Themethod of'procedure would be to fill up the forms there shown to thetop; elevate the sliding keys after the cement was set, by ofperation ofthe windlass; then remove the orm boards and replace the same near thetop of the wall, as in Fig. 2. This operation would be repeated untilthe work had reached lthe limi-ts of the present disposition of thestudding, at which stage the said stiidding would he elevated as isshown in Fig. 6, use being made of the protruding ends of the boltspreviously' left in the 1inished portion of the Wall -for support,Obviously thc arrangement shown in Fig` L may be carried on indefinitelyto suit any height of Wall required, and that riglitangle corners,curved coi-ners, offsets or any irregularities tosut conditions may bemade by a different disposition of the studding. Elevated structuressuch as towers, piers, smokestacks or the like may be constructed withan arrangement as shown in Figs. 5 and 6, while cisterns, wells, and allsunken shafts may be constructed in substantially the same manner exceptthat the supports for the windlass -could be disposed upon the groundinstead of upon the studding.

It may be necessary until the first course of cement is poured and setto provide a longitudinal supporting means for the vertical members ofmy arrangement; I therefore show for the sake of illustration aconnecting cable .Zei disposed as shown, for that purpose, the ends ofwhich are supposed to be secured to the ground. It is obvious, however,that I may see fit to join the members in any other approved manner andremain within the spirit of my invention. v

Having thusdescribed my invention, its advantages over the presentmanner of procedure become apparent.A The saving in time of erection,not to mention the saving in material, is enormous. On iai-ge buildingswhere the forming means are used repeatedly it is necessary with the oldmethod to continually supply new material to replace timbers split andbroken by erection and removal, while with my improved arrangement andmethod these disadvantages are overcome.

I claim as my invention cure by Letters Patent of the Unit-ed States :i

In a forming and constructing means for `concrete work, the combinationot' a plurality of vertically4 disposed supporting studs, meansfoi-retaining the studs in predetermined relative positions, slidablekey members carried by the said studs, a hoist-ing means for the keymembers secured to the said studs, Connecting means and desire tosevertically between the said hoisting means and the said slidable keymembers, a. supporting toothed rack secured to the said studs, and aworking platform supported by the said lcey members and the said rack.

In testimony whereof I afiix my signature in presence ot two witnesses.

JOSEPH S. VAN GIESEN. vditncsses t ii. t). [lasso-N, A miaI'Vi-:x'rwonrin

